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  • A Study of Star Formation in Nearby Starburst Galaxies 
    Ravindranath, Swara (Indian Institute of Astrophysics, Bangalore, 1999-06)
  • Study of star formation in NGC 1084 
    Ramya, S; Sahu, D. K; Prabhu, T. P (Blackwell Publishing, 2007-10)
    We present UBVRI broad-band, Hα narrow-band photometry of the star-forming complexes in the infrared bright galaxy NGC 1084. Results of medium-resolution spectroscopy of some of the brighter complexes are also discussed. ...
  • Study of stellar relics from the early galaxy 
    Susmitha Rani, A (Indian Institute of Astrophysics, 2017-07)
    The thesis, in general aims at studying the early history of the Milkyway through the chemical abundances of metal poor stars in the Halo and in the satellite galaxies of the Milkyway. Halo of a galaxy is one of the early ...
  • Study of stellar streams in the galaxy 
    Ramya, P (Indian Institute of Astrophysics, 2014-02)
    Our Galaxy, also called the Milky Way, is a spiral galaxy consisting of three major distinct components: bulge, disc and halo. They differ from each other in their structural as well as kinematical and chemical properties. ...
  • Study of Sun's "hydromagnetic" Oscillations Using Sunspot Data 
    Gokhale, M. H; Javaraiah, J; Hiremath, K. M (International Astronomical Union, 1990)
    Spherical-harmonic-fourier (SHF) analysis of sun’s ‘nominal toroidal magnetic field’, computed using sunspot data during 1874-1976, shows that sunspot activity can be considered as possibly originating in interference of ...
  • Study of Sun's Long Period Oscillations 
    Hiremath, K. M (Indian Institute of Astrophysics, Bangalore, 1994-07)
  • Study of Sun's rotation and solar activity 
    Javaraiah, J (Astronomical Society of India, 2002-09)
    In my thesis I have presented many interesting properties of Sun's rotation and magnetic activity derived from extensive analysis of over 100 year photoheliographic data on sunspot activity and 26 year's data on ...
  • Study of Sun's Rotation and Solar Activity 
    Javaraiah, J (Indian Institute of Astrophysics, Bangalore, 2000-09)
  • Study of sun-like G stars and their exoplanets 
    Gurumath, S. R (Vellore Institute of Technology and Indian Institute of Astrophysics, 2019-05)
    By employing exoplanetary physical and orbital characteristics, aim of this study is to understand the genesis, dynamics, chemical abundance and magnetic field structure of Sun-like G stars and relationship with their ...
  • Study of sunspot Penumbra to Umbra area ratio using Kodaikanal white-light digitised data 
    Bibhuti Kumar Jha; Mandal, Sudip; Banerjee, D (Springer, 2019-06)
    We study the long-term behaviour of the sunspot penumbra to umbra area ratio by analysing recently digitised Kodaikanal white-light data (1923 – 2011). We implement an automatic umbra extraction method and compute the ratio ...
  • A study of the Cometary Globules in the GUM Nebula 
    Sridharan, T. K (Astronomical Society of India, 1993)
    Among the smaller interstellar molecular clouds the Cometary Globules (CGs) stand out due to their peculiar morphology. They are characterized by compact, dusty heads with long faintly luminous tails extending on one side ...
  • Study of the continuous solar spectrum in the visible range 
    Ramanathan, A. S (C.N.R.S, 1954-01)
    Limb darkening observations made under excellent observing conditions are given for twenty-two wavelengths in the continuous spectrum of the sun in the region λ 3600-λ 6800; these observations were made at a time when the ...
  • A study of the effect of bulges on bar formation in disc galaxies 
    Kataria, Sandeep Kumar; Mousumi Das (Oxford University Press on behalf of the Royal Astronomical Society, 2018-04)
    We use N-body simulations of bar formation in isolated galaxies to study the effect of bulge mass and bulge concentration on bar formation. Bars are global disc instabilities that evolve by transferring angular momentum ...
  • A study of the effect of bulges on bar formation in disc galaxies 
    Kataria, Sandeep Kumar; Mousumi Das (Oxford University Press on behalf of the Royal Astronomical Society, 2018-04)
    We use N-body simulations of bar formation in isolated galaxies to study the effect of bulge mass and bulge concentration on bar formation. Bars are global disc instabilities that evolve by transferring angular momentum ...
  • A Study of the Electric Dipole Moment of Atoms 
    Singh, Angom Dilip Kumar (Indian Institute of Astrophysics, Bangalore, 2001-07)
  • Study of the emission line spectra and the stellar populations of starburst galaxies 
    Ravindranath, S; Prabhu, T. P (Astronomical Society of India, 2000)
    Based on the optical-NIR spectra, we discuss the nebular properties and stellar populations of starburst nuclei. Starbursts are found to have higher electron densities and higher excitations compared to HII nuclei. We find ...
  • A Study of the Emission-Line Spectra and the Stellar Populations of Starburst Galaxies 
    Ravindranath, S; Prabhu, T. P (Springer, 2001-03)
    Based on optical-NIR spectra, we discuss the nebular properties and stellar populations of starburst nuclei. Starbursts are found to have higher electron densities and higher excitations than HII nuclei. The emission lines ...
  • A study of the environmental influences on spiral galaxies in clusters 
    Valluri, M (Astronomical Society of India, 1993)
    Gravitational fields in clusters as well as the hydrodynamic effects of the intracluster medium on the gas in galaxies are responsible for the observed differences between cluster and field galaxies. The thesis consists ...
  • A study of the evolution of the bulges and disks of spiral galaxies in interacting and isolated environments 
    Ankit Kumar (Indian Institute of Astrophysics, 2022-11)
  • Study of the Galactic Cluster NGC 581 
    Sagar, R; Joshi, U. C (Astronomical Society of India, 1978-03)
    Photoelectric magnitudes and colours in the UBV system have been determined for 73 stars in NGC 581. The value of the interstellar reddening is 0m.38. The distance modules to the cluster is estimated at 12m.16 plus or ...

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